CN113884308A

CN113884308A - Method, device and storage medium for identifying transmission rolling

Info

Publication number: CN113884308A
Application number: CN202111041575.4A
Authority: CN
Inventors: 赵建; 宋雨; 王明正; 何闫; 刘涛; 陈迪; 魏可心; 吕洪非; 罗柏成
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-01-04
Anticipated expiration: 2041-09-07
Also published as: WO2023035797A1; CN113884308B

Abstract

The invention discloses a method, equipment and a storage medium for identifying the booming of a transmission, belonging to the technical field of automobiles, and comprising the following specific steps of firstly obtaining gear shifting data of a product sample car with the existing booming, and fitting a gear shifting line graph; fixing a test sample vehicle on a four-wheel drive or two-wheel drive rotating hub test bed which meets the test requirement of simulating a smooth road; arranging noise test points; adjusting the gear of the vehicle to be tested from a manual three-gear to the highest gear under different working conditions to perform noise test; subjective evaluation is carried out on the booming under different working conditions; and (4) establishing a noise objective value range according to different vehicle types, finding a corresponding point value on the obtained shift line according to an objective test result and a subjective evaluation score, and marking different marks so as to identify the rumbling region. According to the control method, the problem of in-vehicle rolling caused by improper gear shifting of the transmission is optimized by determining the gear shifting line of the transmission, and the gear shifting line of the transmission is calibrated and optimized, so that the gear shifting moment of the transmission and the in-vehicle rolling are relatively balanced.

Description

Method, device and storage medium for identifying transmission rolling

Technical Field

The invention belongs to the technical field of automobiles, and particularly relates to a method, equipment and a storage medium for identifying the rolling of a transmission.

Background

The economic development makes the requirements on the NVH performance (vibration, noise and harshness) of automobiles higher and higher, but the vibration and noise problems of automobiles are more prominent along with the development trend of the lightweight trend of automobiles, and the problem of the booming in automobiles is always an important hotspot of the concern of the noise problems in automobiles and an important reason of complaints of customers.

At present, optimization and control of drive train torsional vibration are important technologies capable of reducing transmission rumbling, for example, means such as reducing clutch rigidity and increasing damping of a clutch damper can be adopted by adopting a dual-mass flywheel and adopting a passive dynamic vibration absorber, and the rumbling in a vehicle can also be optimized to a certain degree by calibrating software such as increasing sliding friction.

However, the optimization time period through hardware is long, the rolling problem cannot be completely avoided, and the economic efficiency and the drivability of the automobile may be sacrificed due to complete software calibration. In addition, the above method cannot optimize the booming noise by combining objective test values and subjective evaluation results of drivers and passengers in the vehicle.

Disclosure of Invention

To overcome the above-identified deficiencies in the prior art, the present invention provides a method, apparatus and storage medium for identifying transmission growl. The control method determines the gear shifting line of the transmission by optimizing the rotating speed of the engine, and can optimize the problem of in-vehicle rolling caused by improper gear shifting of the transmission. According to the invention, the main-order noise and subjective evaluation of the engine in the test vehicle are tested through the hub test, the transmission gear-shifting line is calibrated and optimized, and the balance economy of the project is combined, so that the gear-shifting time of the transmission and the rolling in the vehicle are relatively balanced.

The invention is realized by the following technical scheme:

a method for identifying the rolling of a transmission comprises the following specific steps:

the method comprises the following steps: obtaining gear shifting data of a product sample car with the existing rumbling sound, and fitting a gear shifting line graph;

step two: fixing a test sample vehicle on a four-wheel drive or two-wheel drive rotating hub test bed which meets the test requirement of simulating a smooth road, and adjusting the rotating hub test bed to a hub vehicle-carrying mode;

step three: arranging noise test points;

step four: adjusting the gear of a vehicle to be tested from a manual three-gear to a highest gear under different working conditions to perform noise test, wherein the rotating speed of an engine is fixed, a hub drives the vehicle, and the rotating speed of the engine and vibration noise signal values under different working conditions are recorded;

step five: recording the in-vehicle noise signal value, and simultaneously carrying out subjective evaluation on the booming under different working conditions according to a subjective scoring standard;

and step six, formulating a noise objective value range according to different vehicle types, finding a corresponding point value on the shift line obtained in the step one according to the objective test result obtained in the step four and the subjective evaluation score obtained in the step five, and then making different marks to further identify the rolling region.

Further, the gear shifting data of the product sample vehicle in the step one is acquired from a whole vehicle calibration department, the abscissa of the gear shifting diagram is engine speed, and the ordinate is accelerator opening.

And further, in the second step, a four-wheel drive or rear drive test bed is adopted for the four-wheel drive or rear drive vehicle, and a two-wheel drive test bed is adopted for the front drive vehicle.

Further, the noise test points arranged in the third step are specifically arranged in such a way that the rear-drive or four-drive vehicle noise test points are arranged on the outer ear of the right seat in the rear row, and the front-drive vehicle is arranged on the outer ear of the left seat in the front row.

Further, the different working conditions in the step four are specifically that when the engine speed is below 1800r/min, every 50r/min interval is a working condition, and when the engine speed is in the interval of 1800 r/min-2500 r/min, every 100r/min interval is a working condition; the engine speed reaches 2500r/min, and the throttle opening is from 0% to 100% within 60 +/-5 seconds, which is a working condition.

And further, fixing the engine speed in the fourth step, wherein the engine speed is the lowest speed at which the vehicle stably runs in a certain gear.

Further, the subjective evaluation criteria in step five are as follows:

under the condition that the throttle opening is 0-100%, when the objective noise value is less than or equal to 60dB, the score is 7, which shows that no rumbling exists, when the objective noise value is greater than 60dB and less than or equal to 65, the score is 6.5, which shows that acceptable rumbling exists, and when the objective noise value is greater than 65dB, the score is 6, which shows that obvious rumbling exists.

In a second aspect, the invention also provides a computer apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing a method of identifying transmission growl as described in any one of the embodiments of the invention.

In a third aspect, the invention also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of identifying transmission growl as described in any of the embodiments of the invention.

Compared with the prior art, the invention has the following advantages:

according to the method for identifying the transmission rolling, whether the transmission rolls at different gears, different engine speeds and different accelerator opening degrees of the vehicle can be identified by means of subjective perception of drivers and passengers and combination of objective test data and a mode that the rotating hub drives the vehicle to rotate at a fixed engine speed (vehicle speed), and the rolling area is identified by means of the existing gear shifting line, so that reference is provided for continuously optimizing and calibrating and solving the transmission rolling problem in the product development process.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a transmission shift diagram developed by the calibration department (existing data);

FIG. 2 is a top plan view of a passenger vehicle;

to illustrate the microphone placement positions, the illustration shows the front drive vehicle with only the driver's outer ear (FLO) and the rear drive/quad vehicle with only the rear right outer ear (RRO);

FIG. 3 is a schematic diagram of a microphone layout, taking RRO as an example;

wherein, a is a top view of the right seat of the back row, and b is a side view;

FIG. 4 is a schematic view of throttle opening at fixed engine speed in hub-on-board mode;

FIG. 5 is a schematic view of a shift line after a certain type of vehicle transmission rolling hub measurement;

FIG. 6 is a schematic flow diagram of a method of identifying transmission growl;

fig. 7 is a schematic structural diagram of a computer device in embodiment 2 of the present invention.

Detailed Description

For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Example 1

The embodiment provides a method for identifying transmission rolling, which comprises the following specific steps:

the method comprises the following steps: obtaining gear shifting data of a product sample car with the existing rumbling sound, and fitting a gear shifting line graph; the gear shifting data of the product sample vehicle is acquired from a calibration department, the abscissa of the gear shifting diagram is the engine speed, and the ordinate is the accelerator opening; as shown in fig. 1;

step two: fixing a test sample vehicle on a four-wheel drive or two-wheel drive rotating hub test bed which meets the test requirement of simulating a smooth road, and adjusting the rotating hub test bed to a hub vehicle-carrying mode; the four-wheel drive or rear-wheel drive vehicle adopts a four-wheel drive rotating hub test bed, the front-wheel drive vehicle adopts a two-wheel drive rotating hub test bed, and the rotating hub test bed is adjusted to a hub driving mode; the speed of the rotating hub is fixed during each working condition test, namely the rotating speed of the fixed engine is regulated; and monitoring the temperature of the speed changer at the same time, wherein the temperature of the speed changer in the test process is not more than the highest design temperature of the speed changer; the test sample vehicles adopted in the embodiment are all in a manual gear mode of the manual-automatic integrated transmission.

Step three: arranging noise test points;

as shown in FIG. 3, the noise test point is specifically arranged in such a way that a rear-drive or a four-drive vehicle noise test point is arranged on the auricle of the right seat in the rear row and the front-drive vehicle is arranged on the auricle of the left seat in the front row.

the engine speed is the lowest speed at which the vehicle stably runs in a certain gear;

the different working conditions are specifically that when the engine speed is below 1800r/min, one working condition is set at every 50r/min interval, such as 1000r/min, 1050r/min, 1100r/min, 1150r/min and … 1800r/min, when the engine speed is in the interval of 1800r/min to 2500r/min, 100r/min is set at every time, such as 1800r/min, 1900r/min, 2000r/min, … 2400r/min and 2500 r/min; the engine speed reaches 2500r/min, the throttle opening degree is 60 +/-5 seconds, and the throttle opening degree is from 0% to 100% under a working condition, and 0%, 5%, 10% and 15% are respectively analyzed. . . . . . 95 percent and 100 percent of position data can refine the test range of the rotating speed of the engine according to actual conditions; as shown in fig. 4;

the throttle opening degree is 0-100%, when the objective noise value is less than or equal to 60dB, the score is 7, which indicates no rumbling, when the objective noise value is greater than 60dB and less than or equal to 65, the score is 6.5, which indicates acceptable rumbling, and when the objective noise value is greater than 65dB, the score is 6, which indicates obvious rumbling; the scoring criteria are shown in table 2; marking different roaring marks with different scores, wherein the roaring marks are marked with x, the roaring marks are marked with 6.5, the roaring marks are acceptable and can be marked with delta, the roaring marks are marked with 7, and the roaring marks can be marked with O; see in particular the subjective evaluation reference table in table 1;

TABLE 1 reference table for subjective evaluation

TABLE 2 Scoring rules

And step six, establishing a noise objective value range according to different vehicle types, wherein the range of the embodiment is 60dB to 65dB, finding a corresponding point value on the shift line obtained in the step one according to the objective test result obtained in the step four and the subjective evaluation score obtained in the step five, and then making different marks to further identify the rolling region.

As shown in fig. 5, according to the objective test result of the fourth step, a corresponding point value is found according to the engine speed and the accelerator opening, then different marks are made at the point according to different marks in table 1, and the whistle area of the vehicle type under different working conditions can be identified, as shown in fig. 5, an identification part below 6 marks below a gear line of 6 gears down indicates that the vehicle type has obvious whistle and is unacceptable, and the gear line needs to be adjusted to 6 upper parts.

Example 2

Fig. 7 is a schematic structural diagram of a computer device in embodiment 2 of the present invention. FIG. 7 illustrates a block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention. The computer device 12 shown in fig. 7 is only an example and should not bring any limitations to the functionality or scope of use of the embodiments of the present invention.

As shown in FIG. 7, computer device 12 is in the form of a general purpose computing device. The components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.

Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Computer device 12 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.

The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. Computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, and commonly referred to as a "hard drive"). Although not shown, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.

A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.

Computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with computer device 12, and/or with any devices (e.g., network card, modem, etc.) that enable computer device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. In the computer device 12 of the present embodiment, the display 24 is not provided as a separate body but is embedded in the mirror surface, and when the display surface of the display 24 is not displayed, the display surface of the display 24 and the mirror surface are visually integrated. Also, computer device 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via network adapter 20. As shown, network adapter 20 communicates with the other modules of computer device 12 via bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

The processing unit 16 executes programs stored in the system memory 28 to perform various functional applications and data processing, such as implementing a method of identifying transmission growl as provided by embodiments of the present invention.

Example 3

Embodiment 3 of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of identifying transmission growl as provided by all of the inventive embodiments of the present application.

Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. A method for identifying the rolling of a transmission is characterized by comprising the following specific steps:

step three: arranging noise test points;

2. The method for identifying transmission grower as set forth in claim 1, wherein the product sample vehicle shift data of step one is obtained from a vehicle calibration department, and the abscissa of the shift map is engine speed and the ordinate is throttle opening.

3. The method for identifying transmission grower of claim 1, wherein in step two, the four-wheel drive or the rear-wheel drive vehicle adopts a four-wheel drive rotating hub test bench, and the front-wheel drive vehicle adopts a two-wheel drive rotating hub test bench.

4. The method for identifying transmission booming according to claim 1, wherein the noise test points are arranged in step three, specifically, the noise test points are arranged on the auricle of the right seat in the rear row or the four-wheel drive vehicle, and the front-wheel drive vehicle is arranged on the auricle of the left seat in the front row.

5. The method for identifying the growl of the transmission as set forth in claim 1, wherein the different operating conditions of step four are, specifically, one operating condition at intervals of 50r/min when the engine speed is below 1800r/min, and one operating condition at intervals of 100r/min when the engine speed is between 1800r/min and 2500 r/min; the engine speed reaches 2500r/min, and the throttle opening is from 0% to 100% within 60 +/-5 seconds, which is a working condition.

6. The method for identifying transmission growl as set forth in claim 1, wherein the engine speed is fixed in the fourth step, and the engine speed is the lowest speed at which the vehicle can stably run in a certain gear.

7. The method for identifying transmission grower of claim 1 wherein the criteria for subjective evaluation in step five are as follows:

8. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements a method of identifying transmission growl as claimed in any one of claims 1 to 7 when executing the program.

9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out a method of identifying transmission growl as claimed in any one of claims 1 to 7.